Soils Physical and Chemical Properties Flashcards Preview

RHS L2 R102 Plant Nutrition and the Root Environment > Soils Physical and Chemical Properties > Flashcards

Flashcards in Soils Physical and Chemical Properties Deck (31)
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1

1.1a Describe the natural processes of soil formation

Weathering of parent rock

  1. physical
  2. chemical
  3. biological

2

1.1b Describe the natural processes of soil formation

Addition of organic matter

3

1.1c Describe the natural processes of soil formation

Development of main horizons

  1. organic layer
  2. top soil
  3. subsoil
  4. parent rock

4

1.2a State the properties of topsoil that contribute to the healthy growth of plants

 

Top soil

  1. organic matter content (living and dead organisms, humus)
  2. colour
  3. pore space
  4. aeration
  5. water content
  6. nutrient content
  7. suitability for plant growth

5

1.2b State the properties of subsoil that contribute to the healthy growth of plants

Subsoil

  1. organic matter content (living and dead organisms, humus)
  2. colour
  3. pore space
  4. aeration
  5. water content
  6. nutrient content
  7. suitability for plant growth

6

1.31a Define the term 'soil texture'

soil texture

7

1.31b State the Soil Survey England and Wales definition of particle size for stones

stones

8

1.31c State the Soil Survey England and Wales definition of particle size for sand

sand

9

1.31d State the Soil Survey England and Wales definition of particle size for silt

silt 

10

1.31e  State the Soil Survey England and Wales definition of particle size for clay 

clay

11

1.32a Describe the characteristics of sandy loam soil

Sandy Loam

  1. feel
  2. nutrients
  3. water retention
  4. temperature

12

1.32b Describe the characteristics of siltyloam soil

silty loam

  1. feel
  2. nutrients
  3. water retention
  4. temperature

13

1.32c Describe the characteristics of clay loam soil

clay loam

  1. feel
  2. nutrients
  3. water retention
  4. temperature

14

1.41 Define the term 'soil structure'

soil structure:

15

1.42 Define the term 'crum structure' and describe its 2 influences on plant growth in the root environment

Crumb structure:

  1. crumb formation
  2. crumb destruction

16

1.43a Describe the relation between pore space, air and water in the root environment

  1. Pore space
  2. Air
  3. Water

Saturation point

Field Capacity

Available Water content

Permanent wilting point

Soil moisture deficit

17

1.43b Describe the root environment to include the importance of an appropriate balance between air and water for the healthy growth of plants

18

1.51 Describe how the root environtment can be improved and protected by single digging cultivation

Single digging

19

1.51b Describe how the root environtment can be improved and protected by double digging cultivation

double digging

20

1.51c Describe how the root environtment can be improved and protected by rotary cultivation

21

1.51d Describe how the root environtment can be improved and protected by forking cultivation

22

 1.51e Describe how the root environtment can be improved and protected by raking cultivation

23

1.51f Describe how the root environtment can be improved and protected by consolidation cultivation

24

1.51g Describe how the root environtment can be improved and protected by 'no dig' method of cultivation

25

1.51h Describe how the root environtment can be improved and protected by bed systems of cultivation

26

1.52a Describe how the root environtment can be improved and protected by the addition of organic material

27

1.52b Describe how the root environtment can be improved and protected by the addition of inorganic material

inorganic material:

  1. grit
  2. sand
  3. lime

28

1.53a Describe how the root environtment can be improved and protected by the avoidance and removal of compaction (pans and surface 'after capping')

Mulching

29

1.53b Describe how the root environtment can be improved and protected by the avoidance and removal of compaction (pans and surface 'after capping')

green manure

30

1.53c  Describe how the root environtment can be improved and protected by the avoidance and removal of compaction (pans and surface 'after capping')

timing of cultivation